開管圧力計による超音波強度簡易測定法の改良について

概要

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Saneyoshi's radiation pressure meter of open-tube type is convenient for use in making measurements of ultrasonic intensity in liquid. However, its sensitivity is small and moreover is possessed with the drawback of presenting difficulties in the adjustment of the meniscus level of the liquid in the tube. We have improved it by narrowing down the inner diameter of the N-shaped tube around the reading scale and setting the tube at an angle. The sensitivity was thereby increased by seven times. Moreover, by connecting with a rubber tube the N-shapped tube and the probe-tube in the sound field, we have much simplified the adjustment of the meniscus level, this being done by merely turning a screw pressing on the rubber tube. We have tested this meter in actual use by measuring ultrasonic waves of 0. 2-3 watts/cm^2 at 28 kc and proved its practical value.
社団法人日本音響学会の論文
1954-09-30